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An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines , where the valves were located below the combustion chamber in the engine block .
Engines with multiple banks are shorter than straight engines of the same size, and will often have better engine balance characteristics, resulting in reduced engine vibration and potentially higher maximum engine speeds. Most engines with four or less cylinders use a straight engine layout, and most engines with eight cylinders or more use a ...
Based on work the company had done on 16-cylinder aircraft engines during World War I, the overhead camshaft, three-valve-per-cylinder engine produced 115 brake horsepower (86 kW) at 4,250 rpm, and was capable of revving to an astonishing (at the time) 5,000 rpm. No Grand Prix engine before the war had peaked at more than 3,000 rpm.
They used the expertise they had gained to start building production engines and cars which were renowned for their performance and luxury. Among the novel design features (for a pre-1940 production engine) seen on various Duesenberg engines are single- and double-overhead camshafts, three- and four-valve heads, superchargers and aluminum castings.
The 1949 Oldsmobile Rocket V-8, with a displacement of 303 cu in (5.0 L), is widely recognized as the first postwar modern overhead valve (OHV) engine to become available to the public. [12] The Oldsmobile was an immediate success in 1949 and 1950, and all the automobile manufacturers could not help noticing the higher sales of the Oldsmobile ...
The engine was fitted with a governor to allow the engine speed to be set somewhere between idling speed of 400 rpm and full power speed of 2,200 rpm, maintaining this speed against varying loads. The "belt hp" rating of the tractor was 23.9 hp although the tax rating of 20 hp gave the tractor its model number of TE20.
This was due to the C-Series being in essence an enlarged overhead valve development of the earlier 2.2 L Straight-6 overhead camshaft engine [2] used in the post-war Morris Six MS and Wolseley 6/80 from 1948 until 1954, which itself also formed the basis of a related 1.5 L 4-cylinder engine for the Morris Oxford MO in side-valve form and the ...
Overhead valve → – 1: The subject is a type of engine, not a type of valve. 2. The subject does not cover all overhead valve engines, just those with valves operated by pushrods. 3. The title "OHV engine" is more in line with "Flathead engine" and "IOE engine". Sincerely, SamBlob 00:18, 26 February 2015 (UTC)